It depends on the context of your use.
Providing all of your users have seperate ArcGIS Online logins, each person could use the Collector App to gather data.
For example, if you wanted to locate certain places over a geographic area. Each student could pick a district and
add points to the map on Collector. If you have the right fields in use, you could have gauges and clocks in Web App
builder that would automatically hightlight COUNT numbers.